Samsung PM991a 1TB PCIe 3.0 x4 NVMe M.2 2230
Samsung
59 Overall Score
vs
Western Digital WD_BLACK SN8100 4TB PCIe 5.0 x4 NVMe M.2 2280
Western Digital
93 Overall Score
Scores
Workstation
Gaming
Console
Budget
Laptop
Portable
Specifications
| Samsung PM991a | Western Digital WD_BLACK SN8100 | |
|---|---|---|
| Drive | ||
| Capacity | ||
| Form Factor | M.2 2230 | M.2 2280 |
| Interface | PCIe 3.0 x4 | PCIe 5.0 x4 |
| Protocol | NVMe | NVMe |
| PCIe Generation | 3 | 5★ |
| External | ✗ | ✗ |
| Performance | ||
| Sequential Read (MB/s) | ||
| Sequential Write (MB/s) | ||
| Random Read (IOPS) | ||
| Random Write (IOPS) | ||
| Hardware | ||
| NAND | TLC | TLC |
| DRAM Cache | — | ✓★ |
| Reliability | ||
| Endurance (TBW) | No data | |
| MTBF (hours) | No data | |
| Warranty (years) | — | 3★ |
| Features | ||
| Heatsink | — | ✓★ |
| Hardware Encryption | — | ✓★ |
Pros & Cons
Samsung PM991a 1TB PCIe 3.0 x4 NVMe M.2 2230
- Strong random (84th percentile)84th %ile
- Strong social proof (77th percentile)
- Below average endurance (15th percentile)15th %ile
Western Digital WD_BLACK SN8100 4TB PCIe 5.0 x4 NVMe M.2 2280
- Strong feature (100th percentile)100th %ile
- Strong speed (100th percentile)100th %ile
- Strong random (99th percentile)99th %ile
- Strong capacity (93rd percentile)93rd %ile
Pricing
Samsung PM991a 1TB PCIe 3.0 x4 NVMe M.2 22300.110score per dollar
vs
Western Digital WD_BLACK SN8100 4TB PCIe 5.0 x4 NVMe M.2 22800.066score per dollar
Samsung PM991a 1TB PCIe 3.0 x4 NVMe M.2 2230 offers 1.7x better value for money
Samsung PM991a 1TB PCIe 3.0 x4 NVMe M.2 2230
Western Digital WD_BLACK SN8100 4TB PCIe 5.0 x4 NVMe M.2 2280
Verdict
Winner: Western Digital WD_BLACK SN8100
Scores 93 overall, wins 6 of 6 usage categories and 12 of 17 specs.
